title: Length measurement of the eye using a swept-source interferometer.
abstract: In this article, a swept-source setup based on a semiconductor optical amplifier at the central wavelength of 1050 nm for measurements of the axial length inside the eye is presented. The large coherence length is achieved using a tunable optical filter, consisting of a reflective diffraction grating, two Littrow prisms, and a scanner. It was possible to achieve a coherence length of 40 mm, which allowed interference measurements in this range to be made. Measurements of the biomedical data of a human model eye are presented. To realize faster measurements, the data acquisition must be increased to more than 2 MS/s. In further studies, the usage of a field-programmable gate array, to achieve faster measurements, will be considered.
authors.forename: Haroun
authors.initials: H
authors.lastname: Al-Mohamedi
authors.forename: Andreas
authors.initials: A
authors.lastname: Prinz
authors.forename: Guido
authors.initials: G
authors.lastname: Mieskes
authors.forename: Theo
authors.initials: T
authors.lastname: Oltrup
authors.forename: Thomas
authors.initials: T
authors.lastname: Bende
mesh_terms: D000886:Anthropometry / Q000295:instrumentation*; D003941:Diagnostic Techniques, Ophthalmological / Q000295:instrumentation*; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005123:Eye / Q000033:anatomy & histology*; D006801:Humans; D007368:Interferometry / Q000295:instrumentation*; D007834:Lasers; D009929:Organ Size; D019047:Phantoms, Imaging; D012031:Refractometry / Q000295:instrumentation*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D041623:Tomography, Optical Coherence / Q000295:instrumentation*